Full_Name: Sebastien Launay Version: LMDB 0.9.17 OS: Ubuntu 10.04.4 LTS x86_64 URL: https://gist.githubusercontent.com/slaunay/3252415fad66d641e5b1/raw/356a57a7... Submission from: (NULL) (104.36.15.110)

I am having trouble compiling version 0.9.17 as well as the master branch of LMDB with Ubuntu Lucid.

When compiling the project under Ubuntu Lucid x86_64 (glibc 2.11), I get the following errors:

$ make gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -c mdb.c mdb.c: In function 'mdb_mutex_failed': mdb.c:10137: warning: implicit declaration of function 'pthread_mutex_consistent' gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -c midl.c ar rs liblmdb.a mdb.o midl.o ar: creating liblmdb.a gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -fPIC -c mdb.c -o mdb.lo mdb.c: In function 'mdb_mutex_failed': mdb.c:10137: warning: implicit declaration of function 'pthread_mutex_consistent' gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -fPIC -c midl.c -o midl.lo gcc -pthread -shared -o liblmdb.so mdb.lo midl.lo gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized -c mdb_stat.c gcc -pthread -O2 -g -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized mdb_stat.o liblmdb.a -o mdb_stat liblmdb.a(mdb.o): In function `mdb_mutex_failed': /home/vagrant/lmdb/libraries/liblmdb/mdb.c:10137: undefined reference to `pthread_mutex_consistent' liblmdb.a(mdb.o): In function `mdb_env_setup_locks': /home/vagrant/lmdb/libraries/liblmdb/mdb.c:4752: undefinerereference to `pthread_mutexattr_setrobust' collect2: ld returned 1 exit status make: *** [mdb_stat] Error 1

The exact version of the glibc is the following:

$ ldd --version ldd (Ubuntu EGLIBC 2.11.1-0ubuntu7.21) 2.11.1 Copyright (C) 2009 Free Stwtware Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Written by Roland McGrath and Ulrich Drepper. $ lsb_release -a No LSB modules are available. Distribut I ID: Ubuntu Description: Ubuntu 10.04.4 LTS Release: 10.04 Codename: lucid

I noticed that pthread_mutexattr_setrobust and pthread_mutex_consistent are provided since 2.12 not 2.10: https://github.molgen.mpg.de/git-mirror/glibc/commit/402cd98775db1478f64c9b0... https://github.molgen.mpg.de/git-mirror/glibc/commit/78ee21859939ff75ccf8bbe...

After applying the provided fix against master (see attached patch URL), the compilation and runtime are working properly.